[Bug tree-optimization/51692] [4.7 Regression] ICE on several valgrind tests

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51692

--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-03 11:54:58 UTC ---
Author: rguenth
Date: Tue Jan  3 11:54:53 2012
New Revision: 182838

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182838
Log:
2012-01-03  Richard Guenther  <rguenther@suse.de>

    PR tree-optimization/51692
    * tree-ssa-dce.c (eliminate_unnecessary_stmts): Do not remove
    the LHS of allocation stmts.

    * gcc.dg/torture/pr51692.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr51692.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-dce.c